Journal of Beijing University of Posts and Telecommunications

  • EI核心期刊

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2008, Vol. 31 ›› Issue (2): 10-14.doi: 10.13190/jbupt.200802.10.wuyf

• Papers • Previous Articles     Next Articles

Electromagnetic Modeling of Micro Sensor Node
for Wireless Sensor Network

WU Yin-feng1, WAN Jiang-wen2, FENG Ren-jian2   

  1. 1. School of Automation, Beijing University of Posts and Telecommunications, Beijing 100876, China;
    2. School of Instrument Science & Opto-electronics Engineering, Beihang University, Beijing 100083, China
  • Received:2007-06-26 Revised:1900-01-01 Online:2008-04-28 Published:2008-04-28
  • Contact: WU Yin-feng

Abstract:

Modeling radio frequency micro-electro-mechanical system (RF MEMS) device for electromagnetic analysis is difficulty, especially with small feature size and movable structures. A new electromagnetic modeling method, deformed alternating-direction implicit method finite difference time domain (DADI-FDTD), is proposed. The dynamic equation of motion is dispersed in time domain using finite difference methods (FDM). Numerical dispersion is discussed in the three-dimensional ADI-FDTD method. A new algorithm, dielectric interpolations, is presented, it is capable of solving the conflict of the time and special steps between the mechanical portion and electromagnetic (EM) portion. And it’s able to implement the EM modeling in time domain of complex three-dimensional structures. Simulation results demonstrate the feasibility of the method.

Key words: wireless sensor network, radio frequency microelectromechanical system devices, electromagnetic modeling, linear interpolation

CLC Number: